Private Sub UserForm_Initialize()
Set f = Sheets("bd")
a = f.Range("A2:E" & f.[A65000].End(xlUp).Row).Value
Set d = CreateObject("Scripting.Dictionary")
Dim Tbl(1 To 2)
For i = 1 To UBound(a)
Tbl(1) = a(i, 1)
Tbl(2) = a(i, 3)
d(a(i, 1) & a(i, 3)) = Tbl
Next i
Dim b(): ReDim b(1 To d.Count, 1 To 2)
i = 0
For Each c In d.keys
i = i + 1
b(i, 1) = d(c)(1)
b(i, 2) = d(c)(2)
Next c
Call Tri(b, 1, LBound(b), UBound(b))
Me.ComboBox1.List = b
End Sub